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Human cooperative wheelchair for haptic interaction based on dual compliance control

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2 Author(s)
Katsura, S. ; Dept. of Syst. Design Eng., Keio Univ., Yokohama, Japan ; Ohnishi, K.

A human and a robot will carry out a task which is not attainable by themselves. In particular, a human recognizes environment and plans his trajectory without collision with obstacles. On the other hand, a robot generates a controlled force more than a human. In this paper, the best combination of human ability and robot capacity is considered. Based on force commands from a human, a robot supports it A reaction torque observer is implemented in a robot to observe an environmental disturbance. Environmental disturbance is classified into translational and rotational direction modes. As a result, adaptive force control in each mode is attained. Dual compliance control is applied to a wheelchair. A wheelchair that has the abilities of power-assist and relaxation of contact force is developed in this paper. As a result, operationality and stability are improved. The numerical and experimental results show the viability of the proposed method.

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Industrial Electronics, IEEE Transactions on  (Volume:51 ,  Issue: 1 )